Adhesive-applying device.



' c. F. JENKINS. ADHESIVE APPLYING DEVICE APPLICATION FILED NARA, 1910.

Patented June 17,1913.

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COLUMBIA PLANOORAPH 420.. vlAsmuu'roN, I.)v c.

0. F. JENKINS.

ADHESIVE APPLYING nnvms.

APPLIOATIOH FILED NARA, 1910.

Patented June 17, 1913.

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COLUMBIA PLANOGRAPII 60., WASHIW. D. C.

UNITED STATES PATENT OFFICE.

CHARLES FRANCIS JENKINS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO SINGLE SERVICE PACKAGE CORPORATION OF AMERICA, OF NEW YORK, N. Y.,

A CORPORATION OF NEW JERSEY.

To aZl whom it may concern Be it known that I, CHAnLns FRANCIS JENKINS, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Adhesive-Applying Devices, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to mechanism for applying adhesive to the interior of paper receptacles at points to be covered by the margins of closures to be inserted therein, and the object is to secure rapid and effective application of the adhesive at the desired points without danger of smearing other portions. providing an open tube containing a rotary adhesiveapplying brush, bringing the end of the tube to or into the mouth of the receptacle, projecting the rotating brush therefrom, retracting the brush Within the tube, and then moving the tube away from the receptacle, the closure being inserted, of course, before the adhesive sets.

In the accompanying drawings, Figure 1 shows in elevation, the novel devices operatively attached to a closure forming and inserting machine of common form. Fig. 2 is an enlarged elevation, partly in section, of parts seen also in Fig. 1. Fig. 3 is a view similar to Fig. 2 but showing certain parts in a different position. Fig. 4 is a view like Fig. 3 but showing slightly modified devices used when the adhesive is to be applied near the lower end of the receptacle.

In these figures, A represents the frame of the machine, A a driving pulley, A its shaft, A gears driving a crankshaft A A a crosshead reciprocated by the crankshaft and carrying devices for forming and inserting closures, and A a device for carrying forward, step by step, tubular paper receptacles B,all without novelty.

In the operation of this machine, each receptacle comes to rest temporarily over a supporting bed plate C, as shown at the left in Fig. 1. Above the receptacle while in this position, a vertical shaft D is mounted to rotate, but not to slide, in a bracket E fixed to the rear side of the crosshead A which is here shown as at the upper limit of its path. Upon the upper end of the shaft D, above the bracket and resting Specification of Letters Patent.

Application filed March 4, 1910.

This object is attained by Patented June 17, 1913.

Serial No. 547,376.

thereon, is fixed a pulley F which is constantly rotated by means of a pulley F upon the shaft A and a belt F which passes around an idler pulley F mounted on the bracket at some distance from the other pulleys, so that the descent of the bracket and idler pulley does not materially affect the action of the belt. To the lower end of the shaft D a downwardly extending sleeve G is fixed by a setscrew G, and in this sleeve is fixed an extension G of the shaft. This extension bears at its lowerend a rigidly connected inverted cup or hollow head G filled with the bristles of a heavy brush, and these bristles are spread outward, to form a disk brush G, by means of a plate G held in place by a screw G the brush disk being normally of a diameter slightly exceeding the diameter of the interior of a receptacle to which it is to apply adhesive.

A hub H, provided with arms H, is mounted upon the shaft extension and is normally gently pressed down upon a shoulder G by a light spring G which reacts against the sleeve or other shoulder above. The ends of the arms are rigidly connected to the wall of a funnel H concentric with the shaft and having a lower cylindrical portion H of approximately the same diameter as the receptacle and having its lower margin inwardly beveled so that it may readily enter slightly into the mouth of the latter, as indicated in Fig. 3. The portion H is provided with external, depending and outwardly flaring, flange-like fingers H to guide the mouth of the receptacle into exact alinement when the funnel descends to the latter.

hen the crosshead is at its highest point, the parts occupy the positions indicated in Figs. 1 and 2 and the shaft D is in rotation carrying with it the funnel and the slightly compressed inclosed brush disk, which is supplied with adhesive from a receptacle J, the supply being regulated by a valve J Preferably, the glue is allowed to fall just within the walls of the funnel so that it may run down upon the periphery only of the brush disk; and such glue as may fall upon the arms cannot escape because the arms are located below the upper margin of the funnel. WVhen the crosshead descends, the retating shaft and funnel are carried down together until the latter meets the receptacle, as in Fig. 3, when its descent and rotation are both arrested when it has entered the mouth to a distance depending on the length of the beveled portion. The slightly compressed brush continues to descend until its body or disk is slightly below the funnel, when by its own elasticity it springs out into contact with the receptacle wall, upon which it effectively applies glue by its rotary movement. \Vhen the crosshead begins to ascend, the brush rises with it and reenters the funnel while the latter is still held down upon the receptacle by the spring, and an instant later the shoulder upon the shaft extension meets the hub and the funnel is lifted to initial position, leaving the recep tacle to be advanced to position for receiving the proper closure, which is inserted in the usual way by the devices carried by the crosshead. The whole operation is repeated automatically and indefinitely.

When the glue is to be applied near the bottom of the receptacle, the devices are attached to a well known machine having a longer closure inserting stroke. In this case, the brush bearing extension of the shaft is made longer, as seen in Fig. 4, and the lower cylindrical portion of the funnel is also lengthened, as shown at K,and made smaller so that it may readily move within the receptacle.

Means other than the fingers of the primary form may be employed, if desired, to guide the mouth of the receptacle, but as the entering portion of the funnel is smaller, this is not usually necessary. The action of this form is practically the same as before and is so obvious that no detailed statement thereof is thought necessary. In either form, the funnel may be a simple tube. Certain modifications of the construction set forth being readily made without invention, I wish to claim my invention as broadly as the state of the art will permit, as well as more specifically.

\Vhat I claim is:

The combination with a support for an open receptacle, of a pendant shaft normally at some distance above the receptacle and alining with its axis, a brush fixed to the lower end of the shaft, a sleeve slidingly mounted upon the shaft, normally inclosing said brush, and adapted to be arrested in its downward movement by engaging the mouth of the receptacle, means for supplying adhesive upon the walls of said sleeve above the brush, means for lowering the shaft until the brush projects within the receptacle from the arrested sleeve and restoring the parts to normal position, a spring resisting relative upward movement of the sleeve upon the shaft, and means for rotating the shaft while so projected.

In testimony whereof I affix my signature in presence of two witnesses.

I CHARLES FRANCIS JENKINS.

Witnesses:

JAMES L. CRAWFORD, R. CRAIG GREENE.

M Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

